Boiler



Feb. 12, 1935. w M cGUlNESS v I 1,990,743

BOILER Original Filed March 14, 1955 2 Sheets-Sheet 1 William M Guiness INVENTOR BY Wm M W 4 A TTORNE Y Feb; 12, 1935.

W. M GUINESS BOILER 1 Original Filed March 14, 1953 2 Sheets-Sheet 2 William M Guiness 8 2 6H424fi III g ldllllllll! l l I rflllllffvfllll INYENTOR.

7 4/3 ATTORNEY.

Patented Feb. 12, 1935 1,990,743

UNITED STATES PATENT OFFKIE 7 1,990,143 V V BOILER ,7 1 William McGuiness, Chicago, Ill. Original application March 14, 1933, Serial No.

660,662. ;Div1'ded and this application March 21, 1934, Serial No. 716,661 r 3 Claims. (01. 122 -359) This invention is a division of my patent ap- 'ers with the upper receiver. The lower portion plication, SerialNo. 660,662, filed March 14, 1933, ofo the inner casing surrounds the fire box 19 entitled Boilers patented May 15,1934, Patent into which fuelmay be introduced through a No. 1,959,033. I door 24 arrangedin the outer front wall and 5 The invention particularly pertains to Water an opening 25 in the front wall '14 of the inner 5 tube boilers adapted for hot water heating syscasing. The outer front wall 5 is also provided tems and low pressure steam heating systems with a door'26 through which the clinker may respectively. be removed from the grate 12.

The object of the invention is to provide the The upper endof the inner casing is closed water tube system which is positioned entirely by the top wall9. The side wall of the inner 1 within the combustion chamber of the boiler casing has. near its upper end a longitudinal with additional circulating tubesof noveldesign, opening 27 through which the hot combustion which do not only increase the Water circulation gases are'conducted into the annular air chamand heat exchange, but'also reinforce the entire ber .18. A. bailie plate 28 extending along the 15 Water tube system mechanically. 7 upper horizontaledge of the opening 27 directs 15 Still another object of the invention is to prothe hot gases downwardly into the air space vide a water tube boiler which may. be easily between the walls 15 and 6. Within this air assembled and maintained, is cheap to manuspace is arranged near the rear end of the same facture, is very eiiicient and safe in operation an upwardly extending bailie plate 29 which and is very economical in fuel consumption. completely bridges the distance between the 20 In the drawings: .1 inner Wall 15 and the outer side wall 6 and di- Fig. 1 is a vertical longitudinal'section of the rects the hot gases forwardly toward the front boiler substantially on the line 11 of Figure 2, of the boiler. 3 certain portions being shown as broken away. According to Fig. 3 there is arranged in the 'Fig. 2 is a vertical cross-section of the boiler air space between" the frontwall 14 of the inner 25 substantially on. the line 2-2 of; Figure Land casing and 'the outer front wallv 5 a partition 1 Fig. 3 shows diagrammatically a perspective wall which is positioned to the left hand side view of the furnace, the travel of thecombusof the opening 25 in the wall 14 and extends tion gases being indicated by arrows.- vertically downward from the 'top wall 9 to a 3( According to the drawings, the boiler of the point somewhat below the lower edge of the 30 present invention is provided with a frontwall opening25. ,This vertical partition 30 is con- 5, sidewalls 6 and La rear wall 8 and a top nected with a horizontal partition 31, which exw'all9/ The 'walls 5,6, 7 and 8 are connected tends along the lower edge of the opening 25 t er a e r Vertical edges and are .mountand is then bent vertically upward at 32 at the edon a suitable foundationlfl made from re right hand side of the same to terminate in an 35 fractory material, fire proof'brick, cement, toroutwardly inclined portion 33. ped rav l or the li s fo ndati 10 n- The ,partition wall 30, 31, 32, 33 divides the 1591115 ash P 11 and the grate 12 of air space between the wall 14 and 5 into two boiler, the front wall of said foundation being superposed chambers or flues. The t gases providedwith thecustomary draft panel door flowing in the air space between the n 15 13 which P i h Pit 11 a and ,6 forwardly are divided by the horizontal the regulation of the natural draft in the boiler. wall portion 31 into currents The upper 3 5 2 22522 ?i i ggfig gi f gg 223 3; 21 1: current, which containsthe hotter gases, is conprising h Vertica1 Walls 14 16 2 ducted by the partit1on wall into the opening 25 These innerwalls extend thefull height .of the in e frontwau 14 andthfarefore reenters the outer walls 5, 6, 7 and 8 andare spaced from the combusfifm Zone the boller- The outer vertical walls to. form an. annular gas rent m contams cooler gases 1S dlrected chamb r ls hi h t d f t entire past the front of the boiler into the air space inner casing and-isused as a flue through which between h Side Walls This Space 50 the combustion gases are conducted before being extends the entire height of the walls 7 and 16 discharged into the chimney. Within the inner and permit n p i n f h combustion casing are arranged the fire box, 19, the lower gases before they are discharged into the chimreceivers 20 and 21, the upper receiver 22 and hey-34. The chimney 34 is preferably connected the watertubes 2?, connectingthelower receiv with the lower left hand corner (Fig. 2 and 3) 55 of the air space between the inner rear wall 17 and the outer rear wall 8 as shown at 35.

Referring now to the water tube system of the boiler, the lower receivers 20 and 21 are preferably circular in cross-section and are positioned in the lower left and right hand corner of the inner casing, extending horizontally from the front toward the rear of the boiler. These receiver tubes 20 and 21 project outwardly from the front wall 5 and rear wall 8 respectively and their ends are flanged and are closed by removable cover plates 40 which facilitate cleaning of the receivers. The upper receiver 22 in which the steam separates from the water when the boiler is used for a steam or vapor heating system, is of larger diameter than the lower receivers 20 and 21 and is arranged centrally in the upper portion of the inner casing, just below the top wall 9, extending horizontally from the front toward the rear of the boiler. The ends of said upper receiver 22 extend through the outer front and rear walls 5 and 8 respectively and are likewise flanged and provided with removable cover plates 40. Both lower receivers 20 and 21 are connected with the upper receiver 22 by a series of water tubes 23 of novel formation and arrangement. The water tubes 23 in each row are spaced from one another in longitudinal direction of the receivers, and one row is staggered with respect to the other row in order that the upper portions of the water tubes 23 may be arranged in interlinked relation as will be described presently. The distance between each two water tubes 23 in each row is at least as large as or larger than the outside diameter of one water tube 23. Since all water tubes 23 are arranged and bent in similar manner, it is deemed suflicient when only one water tube is described in detail. The lower end of the water tube 23 is welded into the upper wall of the lower receiver 20 or 21 as the case may be, and extends vertically upwardly approximately to the height in which the upper edge of the opening 25 is located. Then the tube 23 is bent almost horizontally toward the opposite side wall of the inner casing, when it is bent upwardly and backwardly to form a semi-circular bend as shown at 42. The tube 23 extends again almost horizontally toward the opposite side wall of the inner casing and after forming another semicircular bend 43 it. is welded into the lower wall of the upper receiver 22. Attention is called to the fact, that the upper end of the sinuously bent tubes 23 are connected to the same side of the upper receiver 22 on which the corresponding lower reciver 20 or 21 is located, in order to facilitate repairs and replacements. Furthermore, it is to be noted, that those'tube sections which extend transversely of the inner casing from one side wall to the other are not arranged absolutely horizontal, but they are positioned somewhat inclined in order to prevent any accumulation of sediment in these portions of the water tubes. While I have shown water tubes with two semi-circular bends, it is, of course, obvious that more or less bends may be provided, to increase or decrease the heating surface of'the boiler. It is also obvious, that instead of connecting each lower receiver with one row of water tubes to the upper receiver, I may arrange two or more rows of water tubes connecting each lower receiver with the upper receiver. All these modifications are within the scope of my invention.

In the above described manner, all the water tubes 23 are arranged in closely nested relation within the inner casing in which the combustion of the fuel takes place. The hot combustion gases which flow upwardly have to pass along and through the slot-like spaces formed between the two sets of water tubes before leaving the inner casing through the opening 27, so that the water'tubes 23 and upper receiver 22 are heated very eihciently, speedily and economically.

In addition to the two series of water tubes 23, there are provided within the inner casing, adjacent the front wall 14 and rear wall 1'7 thereof specially constructed circulating tubes 45 which enhance the circulation of the water in the boiler and also reinforce the entire water tube system. 'Each circulating tube 45 comprises a vertical tube section 46 connected with its upper end to the bottom wall of the upper receiver 22 and having its lower end divided in two branches 4'7 and 48 which extend horizontally and then again vertically downwardly to be connected with their lower ends to the lower receivers 20 and 21 respectively. Furthermore, the lower ends of said branch tubes 4'7 and 48 are connected with one another by a horizontal tube 49 (Fig. 2). These circulating tubes 45 preferably have a larger diameter than the water tubes 23.

The upper receiver 22 has at its ends, in the top wall thereof upwardly extending fittings 50 and 51 respectively which project through the top wall 9 and are connected with the ends of a steam or hot water header 52. The header 52 is provided with flanged openings 53 and 54 adapted to be connected to a hot water heating system or a steam heating system or the like, it being understood that the boiler may be used with either one of the two heating systems mentioned. In order to supply the boiler with water, one of the lower receivers 20 or 21 is connected by a pipe 54' with a source of water supply, e. g., a water main. A blow off valve is indicated at 55.

While the boiler in the described embodiment is provided with a furnace using hard or soft coal or other solid fuel, I also contemplate to equip the boiler with any other heating device, as for instance an oil burner or a burner for gaseous fuel. Regardless of what kind of a fuel will be used in the operation of the boiler, there will always be obtained a great saving of fuel. Furthermore, the boiler is very compact when assembled and requires very little space. For the average home it may be completely assembled at the factory and may be installed very readily and conveniently, as it may be brought in through any average door, so that it is not necessary to tear down permanent walls or the like in order to install the boiler.

Having thus described my invention, what I claim is:

1. In combination with a boiler having within a casing a fire box and a combustion chamber, of a tubular receiver positioned horizontally in the upper portion of said combustion chamber, two tubular receivers arranged horizontally in the lower portion of said combustion chamber, one at each side of said fire box, said tubular receivers extending with their ends outwardly from said casing and being closed by individually removable cover plates, a plurality of series of water tubes connecting said lower receivers with said upper receiver, said water tubes being bent sinuously back and forth transversely from one side of combustion chamber to the other, the water tubes in each series of tubes being spaced from one another to form slots through which the other series of tubes and the combustion gases may pass, and circulating tubes adjacent the front and rear ends of said receivers and positioned Within said casing, each circulating tube extending downwardly from said upper receiver and being divided in two laterally and downwardly extending branches connected with said lower receivers adjacent their ends, and a horizontal tube connecting the lower ends of said branches with one another.

2. In combination with a boiler having within a casing a fire box and a combustion chamber, of a tubular receiver positioned horizontally in the upper portion of said combustion chamber, two tubular, receivers arranged horizontally in the lower portion of said combustion chamber, one at each side of said fire box, said tubular receivers extending with their ends outwardly from said casing and being closed by individually removable cover plates, a plurality of series of water tubes connecting said lower receivers with said upper receiver, said water tubes being bent sinuously back and forth transversely from one side of said combustion chamber to the other, the water tubes in each series of tubes being spaced from one another to form slots through which the other series of tubes and the combustion gases may pass, and circulating tubes adjacent the front and rear ends of said receivers, and within said combustion chamber, each circulating tube extending downwardly .from the bottom wall of said upper receiver and being divided in two laterally and vertically downwardly extending branches connected with their lower ends with the top wall of said lower receivers, and a horizontal tube connecting adjacent their lower ends said branches with one another.

3. In combination with a boiler having within a casing a fire box and a combustion chamber, of a tubular receiver positioned horizontally in the upper portion of said combustion chamber, and projecting with its ends from said casing, a header arranged parallel to said tubular receiver and outside said casing, means connecting said header at a plurality of spaced points with said tubular receiver adjacent its ends, said header being provided between its ends with a plurality of flanged openings adapted to be connected with a heating system, two tubular receivers arranged horizontally in the lower portion of said combustion chamber, one at each side of said fire box, a plurality of series of water tubes connecting'said lower receivers with said upper receiver, said water tubes being bent sinuously back and forth transversely from one side of said combustion chamber to the other, the water tubes in each series of tubes being spaced from one another to form slots through which the other series of tubes and the combustion gases may pass, and circulating tubes adjacent the front and rear ends of said receivers and positionedwithin said casing, each circulating tube extending downwardly from said upper receiver and being divided in two laterally and downwardly extending branches connected with said lower receivers adjacent their ends, and a horizontal tube connecting the lower ends of said branches with one another.

WILLIAM McGUINESS.

CAD 

